Gustave philippart



(No Model.) Y A G. PHIL-IPPART.

ELECTRIC ACCUMULATOR.

'Patented-Jan'. 29,1884.

Nusa) STATES PATENT oen-ce.

GUSTAVE PHILIPIART, OF PARIS, FRANCE.

`ELECTRIC ACCUMULATOR.

SPECIFICATION forming part of Letters Patent No. i 292,762, Adated January 29, 1884-, Application filed October 30. 1883. (No model laicnt'cdinlngland August 16, 1883, X0. 2,970, and in France August 21, 1F83.

To @Z whom, t 77u03/ concern.-

Be it known that I, GUsrAvE PHILIPPART, civil engineer, a citizen of France, residing at Paris, in the French Republic, haveinvented certain new and useful Improvements in Electric Accumulators, (for which I have received Letters Patent in England for fourteen years, No. 3,970, dated August 16, 1883, and French patent for fifteen years, August 2l, 1883;) aud I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and usethesame.

The object of this invention is to so construct batteries and accumulators that they may occupy as small a compass as possible, and at the same time obviate many drawbacks in the present method of constructing such apparatus, es-

pecially, first, oxidation and consequent destruction of the parts by which accumulators generally communicate with each other; secondly, the peroxidation of the negative electrode, which after a few weeks of use becomes destroyed, and with it the accumulator; third,- the rapid destruction ofthe case containingthe accumulator. Conically-formedsecondary batteries have previously been employed by me;

but I had abandoned them on account of the rapid `destruction of the lead forming the support to the electrodes. tically overcome this difficulty, and have also so arranged the negative electrode as to determine the production of peroxide of lead in sufficient quantity and as rapidly as by the Faure system.

The following is the method of constructing the batteries, reference being had to the accompanying drawings, in whichn Figures l and 2 are views, partly in vertical section and partly inA elevation, of conicalvessels which constitute the elements ofthe cells; Fig. 3, a sectional view, showing a frustopy ramidal vessel, which may be used instead of that of conical form, Figs. 1 and 2 Fig. 4, aplan of the said frusto-pyramidal vessel; Fig. 5 a

. sectional view, showing a number of hollow f. BV

conical vessels assembled to form a battery 5 and Fig. 6, a plan of the same.

These vesscls'A, which have solid walls and bottoms, andl thus constitute liquid-tight cups I have, however, pracfive to twenty millimeters in thickness. `They are cast with small projections B on the outside and with deep symmetrical projections D, arranged very close together on the inside. Theoutside is coated with act-ive materialsuch as a paste made of an oxide or asalt ,of lead applied thereto in any ordinary or suitble manner-as, for example, witha spatula. This Inaterial fills the spaces between the projections B, as shown at E, Figs. l and 5. The ribs or projections B serve to hold it in place. The vessels are placed one inside another, as shown in Fig. 5, with strips c and blocks b of insulating material between them. Thelower vessel ts in a base, a, of wood or other convenient material. The spaces between the vessels are filled with an exciting-liquid, (water acidulated with sulphuric acid, `for example.) The vessels at the ends of the series constitute the poles of the'battery, andare connected by wires e with the charging-generator, so `that the charging-current ascen ds through the cells. The symmetrical proj ectionsD on theinside of the vessels rapidly pe1oXidize,while the salt or oxide on the'outside is reduced. Eventually the projections D may break down and form substantial-ly a smooth internal layer of' peroxide, as represented at C, Fig. 2. The inner surface of a vessel forms, therefore, the negative surface or element of a cell ofthe charged battery, while the outside of the vessel above constitutes the positive of the same cell. Thus the positive element of each cell is connected with the vnegative element of the cell above through the walls of the vessel A, whose exterior and interior surfaces constitute the said f ing 7 operation, in order to bring it into efii.

cient working order.

In Fig. 1 the active material E is shown applied to the right-hand part of the vessel,

IOO

(shown in elevation,) while it is omitted from the leftdland part, represented in section. In Fig. 2 it is omitted entirely from the outside, and so also in Fig. 3.

rlhe projections D may be vertical, horizontal, helicoidal, or otherwise formed.

It is evident that modifications may be made in details without departing from the spirit of the invention, and that parts of the invention may be used separately.

The peroxide ot' lead being ou the inside of the vessels7 there is not the sameliability of its dropping olf as if placed on the outside.

I claim- 1. A secondary battery comprising` tapering hollow vessels set one within another and held apart, so as to form a series of cells, each ves sel having` closely-set peroxidized lead proj eetions on the inside and an applied coatingr of reduced lead on the outside, substantially as described.

2. An element ofseeondary battery provided with a series of symmetrical projections of cast metal in one piece with theirsupport, and set so close together that they by their juxtaposition constitute, when peroxidized, substantially a layer of active material on said support, substantially as described.

8. The improvement in the manufacture of secondary batteries, consisting in casting the body of an element with a series of symmetrical closely-set projections in one piece with their support, and pcroxidizing the same, the said projections forming,` in virtue of their juxtaposition substantially a layer of active material, as set forth.

1. An element of a secondary-battery cell in the form of a cup or vase, provided with projections and active material applied thereto between said projections, substantially as described.

5. An element of a secondary cell in the form of a cup or vase, provided with a series of symmetrical proj eetions set close together and adapted to form the active material of the element, substantially as described.

6. A cup or vase provided on one surface' with projections and active material applied between the same, and on the other with a series of symmetrical projections set close together, substantially as described, whereby it is adapted to form thepositive element of one cell and the negative element of an adjacent cell, as set forth.

GUSTAVE lll'lLIPlL-'XR'IX 'itnesses:

A. BLTUN,

Roer. M. Hooriin. 

